STD Rates in San Diego County, California
2023 CDC surveillance data for San Diego County, California — chlamydia, gonorrhea, and syphilis rates with state comparisons.
San Diego County has one of the higher STD burdens in California, with a combined rate of 746.2 per 100,000 residents in 2023 — ranking 6th of 58 counties. Reported infections included chlamydia at 535.1 per 100,000 (17,498 cases, 9% above the state rate), gonorrhea at 196.4 per 100,000 (6,423 cases, 3% above the state rate), syphilis at 14.7 per 100,000 (482 cases, 10% below the state rate). Confidential STD testing is available throughout San Diego County — knowing your status is the only way to catch infections that often show no symptoms.
STD Trends in San Diego County, 2000–2023
Reported cases per 100,000 residents each year, against the California rate (dashed). In a county this size a handful of cases moves the rate a long way, so read the shape rather than any single year.
Source: CDC NCHHSTP AtlasPlus county surveillance, 2000–2023.
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San Diego County vs California and the US
| Infection | San Diego County | California | US | vs California | vs US | Rank in California |
|---|---|---|---|---|---|---|
| Chlamydia | 535.117,498 cases | 491.1 | 490.7 | 9% above | 9% above | 9th of 58 |
| Gonorrhea | 196.46,423 cases | 190.2 | 178.2 | 3.3% above | 10.2% above | 6th of 58 |
| Syphilis (P&S) | 14.7482 cases | 16.3 | 15.8 | 9.8% below | 7% below | 23rd of 58 |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among California’s counties. The US rate is all 50 states combined. Comparisons are left out where fewer than 20 cases were reported, because a rate built on so few cases can swing widely from one year to the next.
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